IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
==================================================================
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
BUG: KMSAN: uninit-value in ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479
CPU: 1 PID: 23449 Comm: syz-executor4 Not tainted 4.17.0+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:990
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:640
 ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479
 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x592/0x979 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:366 [inline]
 irq_exit+0x207/0x240 kernel/softirq.c:407
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868
 </IRQ>
RIP: 0010:msan_get_shadow_origin_ptr+0x6/0x2e0 mm/kmsan/kmsan_instr.c:245
RSP: 0018:ffff8800b160ea38 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffff88018fe772e8 RBX: ffff88013db96dbc RCX: ffff88013c2c6dbc
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88018fe77390
RBP: ffff8800b160ea40 R08: ffffffff7fffffff R09: ffff8801bd1572ec
R10: 0000000000000002 R11: ffffffff88b476f0 R12: 0000000000000000
R13: ffff88018fe77390 R14: 0000000000000000 R15: ffff88013db96c00
 __msan_metadata_ptr_for_store_4+0x13/0x20 mm/kmsan/kmsan_instr.c:349
 ipv6_store_devconf net/ipv6/addrconf.c:5121 [inline]
 inet6_fill_ifla6_attrs+0x1492/0x2f00 net/ipv6/addrconf.c:5221
 inet6_fill_link_af+0xcd/0x130 net/ipv6/addrconf.c:5272
 rtnl_fill_link_af net/core/rtnetlink.c:1503 [inline]
 rtnl_fill_ifinfo+0x5abe/0x6360 net/core/rtnetlink.c:1630
 rtmsg_ifinfo_build_skb+0x27f/0x400 net/core/rtnetlink.c:3249
 rtmsg_ifinfo_event net/core/rtnetlink.c:3281 [inline]
 rtmsg_ifinfo+0x112/0x260 net/core/rtnetlink.c:3290
 netdev_state_change+0x1e1/0x2c0 net/core/dev.c:1341
 do_setlink+0x1796/0x6010 net/core/rtnetlink.c:2574
 rtnl_group_changelink net/core/rtnetlink.c:2824 [inline]
 rtnl_newlink+0x1fdc/0x37a0 net/core/rtnetlink.c:2976
 rtnetlink_rcv_msg+0xa44/0x1570 net/core/rtnetlink.c:4646
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
 netlink_rcv_skb+0x37e/0x600 net/netlink/af_netlink.c:2448
 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:4664
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x1680/0x1750 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x104f/0x1350 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg net/socket.c:639 [inline]
 ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117
 __sys_sendmsg net/socket.c:2155 [inline]
 __do_sys_sendmsg net/socket.c:2164 [inline]
 __se_sys_sendmsg net/socket.c:2162 [inline]
 __x64_sys_sendmsg+0x331/0x460 net/socket.c:2162
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455ba9
RSP: 002b:00007f9273d47c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9273d486d4 RCX: 0000000000455ba9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c1186 R14: 00000000004d1350 R15: 0000000000000000

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_alloc_meta_for_pages+0x146/0x700 mm/kmsan/kmsan.c:702
 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250
 __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4404
 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:494 [inline]
 kmalloc_order mm/slab_common.c:1148 [inline]
 kmalloc_order_trace+0xbb/0x390 mm/slab_common.c:1159
 kmalloc_large include/linux/slab.h:446 [inline]
 __kmalloc+0x335/0x350 mm/slub.c:3805
 kmalloc include/linux/slab.h:517 [inline]
 ip_vs_lblcr_init_svc+0x57/0x310 net/netfilter/ipvs/ip_vs_lblcr.c:518
 ip_vs_bind_scheduler+0xa9/0x1f0 net/netfilter/ipvs/ip_vs_sched.c:51
 ip_vs_add_service+0xa9d/0x1d90 net/netfilter/ipvs/ip_vs_ctl.c:1265
 do_ip_vs_set_ctl+0x2aa9/0x2cd0 net/netfilter/ipvs/ip_vs_ctl.c:2462
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x47c/0x4e0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x24b/0x2b0 net/ipv4/ip_sockglue.c:1251
 tcp_setsockopt+0x1c0/0x1f0 net/ipv4/tcp.c:2891
 sock_common_setsockopt+0x13b/0x170 net/core/sock.c:3039
 __sys_setsockopt+0x496/0x540 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1911
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================